Although a very good suggestion, it appears they only sell front reflectors, and install details for the fronts only as well. Hoping to hear back from Nate at iND, but not sure if they have any urgency to do it. Thanks though for the suggestion, I tried that myself but was let down.

Anyone else out there in the same situation as me?

Actually no, if you look closely they do have the rear one at Bimmian and the install video. The install they show is for an e92 but look on their site or call them.